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Flight Reliability

WN 1266 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1266 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

80%
Arrive within 15 minutes
6 min
Average arrival delay
1.3%
Cancelled
4 min early
Median arrival delay

Based on 450 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(56 flights)
  • Tue78%(78 flights)
  • Wed81%(79 flights)
  • Thu83%(58 flights)
  • Fri76%(59 flights)
  • Sat84%(55 flights)
  • Sun79%(56 flights)
On-time by departure window
  • 3–6 AM97%(34 flights)
  • 6–9 AM94%(69 flights)
  • 9 AM–12 PM92%(105 flights)
  • 12–3 PM81%(87 flights)
  • 3–6 PM94%(16 flights)
  • 6–9 PM57%(125 flights)
  • 9 PM–12 AM—(5 flights)
On-time trend by month
83%
May

Jun 96% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202596%28
July 2025100%29
August 202580%30
September 202593%30
October 202595%39
November 202577%30
December 202568%31
January 202669%26
February 202644%25
March 202656%27
April 202683%69
May 202683%77
Departures on time
76%
Diverted
0.7%
Flights flown
441
Months covered
12

Keep nerding

Based on 450 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.